Definition of NO_KRB5 in ssl.h for external applications.

Configure

@@ -685,6 +685,7 @@ if ($no_krb5
 	{
 	$cflags="-DNO_KRB5 $cflags";
 	$options.=" no-krb5" unless $no_krb5;
+	$openssl_algorithm_defines .= "#define NO_KRB5\n";
 	}
 else
 	{

ssl/ssl.h

@@ -59,6 +59,14 @@
 #ifndef HEADER_SSL_H 
 #define HEADER_SSL_H 
 
+#ifdef OPENSSL_ALGORITHM_DEFINES
+# include <openssl/opensslconf.h>
+#else
+# define OPENSSL_ALGORITHM_DEFINES
+# include <openssl/opensslconf.h>
+# undef OPENSSL_ALGORITHM_DEFINES
+#endif
+
 #ifndef NO_COMP
 #include <openssl/comp.h>
 #endif